RAM Mounts Universal Fishfinder Mount The RAM-111U consists of a medium double socket arm, 2.5" diameter round base, and 6.25" x 2" rectangle base. The round base includes a 1.5" C size rubber ball and contains pre-drilled holes, including the universal AMPS hole pattern. The rectangle base also includes a 1.5" C size rubber ball and contains a variety of pre-drilled holes that are compatible with several marine electronic devices, including fishfinders and chartplotters. Compatible with the following fishfinder models : Garmin ECHOMAP Plus 72cv Garmin ECHOMAP Plus 73cv Garmin ECHOMAP Plus 74cv Garmin ECHOMAP Plus 75cv Garmin ECHOMAP Plus 77cv Garmin GPSMAP 722 Garmin GPSMAP 722xs Garmin GPSMAP 723 Garmin GPSMAP 723xsv Garmin GPSMAP 742 Garmin GPSMAP 742xs Garmin GPSMAP 743 Garmin GPSMAP 743xsv Garmin Striker Plus 5cv Garmin Striker Vivid 5cv Garmin Striker Plus 7cv Garmin Striker Plus 7sv Garmin Striker Vivid 5cv Garmin Striker Vivid 7cv Garmin Striker Vivid 7sv Lowrance Elite FS 7 Lowrance Elite FS 9 Lowrance HDS Carbon 7 Lowrance HDS LIVE 7 Lowrance Hook Reveal 7 Series Lowrance Hook Reveal 9 Series Hardware Included: Assembly Hardware Product Dimensions: Overall Height: 7.35" Socket to Socket Length: 4.66" Plate Size: Rectangular Plate: 6.25" x 2" Round Plate: 2.5" Diameter Ball Size: C Size (1.5") Weight Capacity: Standard Use: 4 lbs Heavy-Duty Use: 3 lbs Materials: Marine-grade aluminum Weight: 1.26 lbAdditional Information:Weight: 0.59 kg